#!/usr/bin/python
# -*- coding: UTF-8 -*-

import time
import sys

def test():
  print('xxx')

def testwhile():
  t = 1
  while True:
      print('xxx',t)
      sys.stdout.write('kkk')
      t=t+1
      time.sleep(5)


if __name__ == "__main__":
  print('is mian')
  testwhile()